Update diffbot_gazebo/diffbot_view.launch

Use db_world as default instead of corridor

Author: fjp

diffbot_gazebo/launch/diffbot_view.launch

@@ -10,7 +10,8 @@
   <arg name="gui" default="true"/>
   <arg name="headless" default="false"/>
   <arg name="debug" default="false"/>
-  <arg name="world_name" default="$(find diffbot_gazebo)/worlds/corridor.world"/>
+  <!-- arg name="world_name" default="$(find diffbot_gazebo)/worlds/corridor.world"/ -->
+  <arg name="world_name" default="$(find diffbot_gazebo)/worlds/db_world.launch"/>
   <arg name="x_pos" default="-2.0"/>
   <arg name="y_pos" default="-0.5"/>
   <arg name="z_pos" default="0.0"/>